Home / 5,146.80-7,715.58-1,859.12

Finding the Fourth Proportional to 5,146.80, 7,715.58 and 1,859.12

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Solution

The fourth proportional to 5,146.80, 7,715.58 and 1,859.12 is: 2,787.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,146.80 : 7,715.58 = 1,859.12 : x
  2. Step 2: Convert to fraction form
    5,146.80/7,715.58 = 1,859.12/x
  3. Step 3: Cross multiply
    5,146.80x = 7,715.58 × 1,859.12
  4. Step 4: Simplify right side
    5,146.80x = 14,344,189.09
  5. Step 5: Solve for x
    x = 14,344,189.09/5,146.80
  6. Step 6: Final answer
    x = 2,787.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.